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Edge impact damage scenario on stiffened composite structure

Ostré, Benjamin and Bouvet, Christophe and Lachaud, Frédéric and Minot, Clément and Aboissière, Jacky Edge impact damage scenario on stiffened composite structure. (2014) Journal of Composite Materials. ISSN 0021-9983

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Official URL: http://dx.doi.org/10.1177/0021998314537325

Abstract

Low velocity / low energy edge impact and almost-static experiments have been carried out on carbon fiber reinforced plastic (CFRP) structures. A drop-weight testing machine was used to impact four different UD laminates at 10, 20 and 35 J impact energy levels. In parallel, an almoststatic study has been conducted in order to compare its results with the impact one. Compression after impact tests will supply the residual behavior afterwards. The impact results show that the static and dynamic behaviors are different. A simplified analytical impact model is provided trying to explain the difference between static and dynamic edge impact regardless the stacking or impact energy. It actually well represents the dynamic and static initial stiffness and the crushing plateau. The fiber properties control the initial impact stiffness. In addition, regardless of the impact energy and stacking, a specific "crushing plateau" phenomenon appears. In the almost-static indentation case the properties of the matrix control the initial indentation stiffness. The experimental results will be compared to a numerical model in order to simulate the impact and compression after impact damage.

Item Type:Article
Additional Information:Thanks to SAGE editor. The definitive version of the article can be found at Journal of Composite Materials website : http://jcm.sagepub.com/
HAL Id:hal-01068997
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Other partners > Sogeti (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Laboratory name:
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Deposited By: christophe bouvet
Deposited On:26 Sep 2014 14:26

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